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Method and apparatus for chimneys or during the sweep. - plasters by the accumulation of carbon black and developed air pressure directly a device for the soot and selbsttaetig shuts off again if, in order to the carbon black and smoke entry into the apartment, and the like. To prevent
Method and apparatus for chimneys or during the sweep. - plasters by the accumulation of carbon black and developed air pressure directly a device for the soot and selbsttaetig shuts off again if, in order to the carbon black and smoke entry into the apartment, and the like. To prevent